hammond electrical components German hammond models hammond prices

hammond electrical components are components that convert electrical energy into magnetic energy for storage. The structure of an inductor is similar to that of a transformer, but it has only one winding. An inductor has a certain inductance and only opposes changes in current. If the inductor is in a state with no current flowing through it, it will attempt to oppose current flow when the circuit is closed; if the inductor is in a state with current flowing through it, it will attempt to maintain the current unchanged when the circuit is opened. Inductors are also known as chokes, reactors, or dynamic reactors.

hammond electrical component characteristics

The so-called dynamic characteristics refer to the output characteristics of a sensor when the input changes. In practical applications, the dynamic characteristics of a sensor are often expressed by its response to certain standard input signals. This is because the sensor's response to standard input signals is easy to obtain experimentally, and there is a certain relationship between its response to standard input signals and its response to arbitrary input signals; often, knowing the former allows inference of the latter. The most commonly used standard input signals are step signals and sinusoidal signals, so the dynamic characteristics of sensors are also commonly expressed by step response and frequency response.

hammond electrical component classification

There are various classification methods for thyristors: (1) Classification by turn-off, conduction, and control methods: Thyristors can be divided into conventional thyristors, bidirectional thyristors, reverse-conducting thyristors, gate turn-off thyristors, BTG thyristors, temperature-controlled thyristors, and light-controlled thyristors, among others. (2) Classification by pins and polarity: Thyristors can be divided into two-pin thyristors, three-pin thyristors, and four-pin thyristors based on their pins and polarity. (3) Classification by package type: Thyristors can be divided into three types based on their package: metal-packaged thyristors, plastic-packaged thyristors, and ceramic-packaged thyristors. Among these, metal-packaged thyristors are further divided into bolt-type, flat-type, and round-case types, among others; plastic-packaged thyristors are divided into types with heat sinks and types without heat sinks. (4) Classification by current capacity: Thyristors can be divided into high-power thyristors, medium-power thyristors, and low-power thyristors based on current capacity. Typically, high-power thyristors mostly use metal case packaging, while medium- and low-power thyristors mostly use plastic or ceramic packaging. (5) Classification by turn-off speed: Thyristors can be divided into conventional thyristors and high-frequency (fast) thyristors based on their turn-off speed. (6) Zero-crossing triggering - generally for power regulation, i.e., triggering occurs when the phase of the sinusoidal AC voltage crosses zero; triggering must occur at the zero-crossing point to conduct the thyristor. (7) Non-zero-crossing triggering - the thyristor can be triggered to conduct regardless of the phase of the AC voltage; common method is phase-shift triggering, i.e., changing the output percentage by altering the conduction angle (phase angle) of the sinusoidal AC.

hammond electrical component principles

The forward characteristic of the volt-ampere characteristic curve of a Zener diode is similar to that of a conventional diode. In the reverse characteristic, when the reverse voltage is below the reverse breakdown voltage, the reverse resistance is very high and the reverse leakage current is extremely small. However, when the reverse voltage approaches the critical value of the reverse voltage, the reverse current increases suddenly, which is called breakdown. At this critical breakdown point, the reverse resistance drops suddenly to a very small value. Although the current varies over a wide range, the voltage across the diode remains basically stable near the breakdown voltage, thereby achieving the voltage stabilization function of the diode.

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